Journal
SOLID STATE COMMUNICATIONS
Volume 207, Issue -, Pages 26-29Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2015.02.006
Keywords
Local deformation; Surface strain; Se nanowires; Band gap modulation
Categories
Funding
- National Natural Science Foundation of China [51302231, 51271155, 51377138]
- Fundamental Research Funds for the Central Universities [SWJTU2682013RC02, SWJTU11ZT31, 2682013CX004]
Ask authors/readers for more resources
Based on the models built with our cyclic replacement method we introduced local strain into the (111) facet of the Si < 112 > nanowires. With ab initio approach, it is found that the electronic band structures of the nanowires are modulated efficiently by the surface strains: the indirect band gap declines by strong surface compression, while it always decreases and impressively changes to a direct band gap with surface tension. Moreover, the local deformations result in spatial separation of the valence band minimum to the compressed surface and the conduction band minimum to the tensed surface. (C) 2015 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available